If you have questions about the visa application process, please refer to your local U.S. Embassy or Consulate: https://www.usembassy.gov

Invitation Letters

An invitation letter is NOT required to apply for a U.S. Visa. Per the U.S. State Department website:

Visa applicants must qualify on the basis of the applicant's residence and ties abroad, rather than assurances from U.S. family and friends. A letter of invitation or Affidavit of Support is not needed to apply for a nonimmigrant tourist visa. If you do choose to bring a letter of invitation or Affidavit of Support to your interview, please remember that it is not one of the factors that we use in determining whether to issue or deny a nonimmigrant tourist visa.

When you register for Metabolomics 2018, you will receive an email confirming your registration. Keep a copy of this email for your records, it may be required with your visa application. If you need your confirmation email resent, send your request to This email address is being protected from spambots. You need JavaScript enabled to view it..